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Proceedings of the United States National Museum

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Proceedings of the United States National Museum PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM l>y ihc I SMITHSONIAN INSTITUTION U. S. NATIONAL MUSEUM Vol. 105 Washington : 1956 No. 3361 MARINE POLYCIIAETE WORMS FROM LABRADOR By Marian H. Pettibone ^ This report on the polychaete fauna of Labrador is based on material collected by the Blue Dolphin Expeditions to Labrador and Newfoundland in 1949, 1950, 1951, and 1952 under the command of David C Nutt. The collections were made between 51° and 60° north latitude, in the intertidal zone and in depths of from 4 to 125 fathoms, on bottoms of silt, mud, sand, rubble, pebbles, stones, and rocks, together with detritus, shells, corals, bryozoans, algae, worm tubes, and various combinations of these. The collections are de- posited in the U. S. National Museum. Additional records for some of the Labrador species are cited from other collections in that museum. This paper supplements to some extent the report on the polychaetes of Point Barrow, Alaska (Pettibone, 1954). Of the 68 species in the Labrador collections, 45 were found at Point Barrow. In the syste- matic portion below, only those hterature references not mentioned in the earlier paper are cited ; more'complete synonymies for the species common to both regions will bo found in the Point Barrow report. I Department of Zoology, University of New Hatupshire, Durhaia, N. H. 366148—56 1 581 532 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loe The polychaete fauna of Labrador is known only from a few scattered records. The most extensive single paper is the report by J. Percy Moore (1909b) on a collection of polychaetes dredged in 1908 by Owen Bryant off the coasts of Labrador, Newfoundland, and Nova Scotia; 38 of the 51 species mentioned in that report were found on the Labrador coast. Most of the collection was deposited in the National Museum and is referred to below. The Blue Dolphin collections nearly double the number of polychaete species known from Labrador. The writer acknowledges her appreciation to the authorities of the Smithsonian Institution for allowing her to make use of the facilities of the National Museum, and especially to Dr. Waldo L. Schmitt and Dr. Fenner A. Chace, Jr., of the Department of Zoology staff there. Special thanks are also due to Mr. David C. Nutt of the Dartmouth College Museum for his helpful suggestions and assistance. List of Stations The locations of the polychaete stations are shown in figure 1. They are listed below with temperatures (estimated yearly range in parentheses) and salinities, all of which were furnished by D. C. Nutt. The species found at each station are listed, with the number of spec- imens indicated in parentheses. 1. Strait of Belle Isle, 51°26.5' N., 56°52' W., 40 fms., June 27, 1949; 0.8° C. (-1.5 to 3.0), 327oo. Harmothoe cxtenuala (Grube) (5) Nereis pelagica Linne (3) Eusyllis blomstrandi Malmgren (9) Spirorbis spirillum (Linne) C5) 2. Strait of Belle Isle, 51°41.5' N., 56°20' W., 25 fms., coral and rock, July 1, 1949; -0.43° C? (-1.6 to 1.0), 32°/oo. Eunoe oerstedi Malmgren (1) Eusyllis blomstrandi MalmgTen (6) Harmothoe imbricata (Linn6) (1) Nereis pelagica Linn6 ''4) Harmothoe extenuata (Grube) (5) Noihria conchylega (Sars) (1) Autolytus fallax Malmgren (1) Thelepus cincinnatus (Fabricius) Sphaerosyllis erinaceus Claparfede (1) (1) 3. Strait of Belle Isle, 51°39.7' N., 55°57.7' W., 30 fms., rock, July 1, 1949; 0.0° C. (-1.0 to 12), 32°/oo. Thelepus cincinnalus (Fabricius) (1) 4. Strait of Belle Isle, 51°39.7' N., 56°08' W., 40 fms., rubble, July 1, 1949; -0.8° C. (-1.6 to 1.0?), 32.3%o. Eunoe nodosa (Sars) (2) Harmothoe extenuata (Grube) (1) Eunoe oerstedi Malmgren (1) of the Bliu Dolphin Figure I.—Coast! of Labrador «nd Newfoundland ihowing the location* of the polychaete stations 67-79). Ubrador Expeditions of 1949 (Stations 1-27). 1950 (Sutions 28-48), 1951 (Stations 49-66). and 1952 (Stations (Prepared by D. C. Nutt.) leeus—M (Faoep. RS) POLYCHAETE WORMS—PETTIBONE 533 5. St. Lewis Inlet, 52°20.1' N., 55°49.4' W., 40 fms., mud, July 12, 1949; -1.2° C. (-1.6 to ?), 32.6l7oo. Arcteobia anttcostiensis (Mcln- Pectinaria hyperborea (Malmgren) tosh) (1) (8) Prionospio tnalmgreni Claparfede (1) 6. St. Lewis Inlet, 52°22.3' N., 55°56.7' W., 35 fms., soft mud, July 12, 1949; -1.34° C. (-1.6 to ?), 32.4°/oo. Harmothoe ertenuata (Grube) (1) 7. Kaipokok Inlet, 54°56.7' N., 59°43.2' W., 45 fms., silt, July 29, 1949; -1.8° C. (-1.8 to -1.6), 32.6°/oo. Antinoe badia (Th6el) (5) Nephtys ciliata (MuUer) (2) Harmothoe extenuata (Grube) (4) Polycirrus medusa Grube (1) Gattyana cirrosa (Pallas) (2) Branchiomma infarcla (Kroyer) Castalia aphrodiioides (Fabricius) (5) (1) 8. Kaipokok Inlet, 55°01.5' N., 59°33.3' W., 45 fms., silt, July 29, 1949; -1.85° C. (-1.8 to -1.6), 32.9%o. Castalia aphrodiioides (Fabricius) (1) 9. Kaipokok Inlet, 54°52.4' N., 59°50.3' W., 15 fms., silt, July 29, 1949; -1.1° C. (-1.8 to 0.0), 30.68%o. Harmothoe extenuata (Grube) (1) Gattyana cirrosa (Pallas) (2) 10. Hebron Fjord, 58°14.8' N., 62°29.6' W., 60 fms., fine sandy mud, some rock, Aug. 7, 1949; -1.0° C. (-1.8 to 0.0), 32.5°/oo. Gattyana cirrosa (Pallas) (3) Ampharete arctica Malmgren (1) Gattyana amondseni (Malmgren) Pista flexuosa (Grube) (3) (1) Terebellides stroemii Sars (1) Pectinaria hyperborea (Malmgren) (7) 11. Hebron Fjord, 58°11.4' N., 62°34.2' W., 95 fms., mud, Aug. 8, 1949; -1.8° C. (-1.8 to -1.8), 33°/oo. Antinoe badia (Th^el) (2) Chaetozone setosa Malmgren (16) Eunoe nodosa (Sars) (1) Brada inhabilis (Rathke) (1) Arcteobia anticostiensis (Mcln- Brada granosa Stimpson (13) tosh) (6) Pectinaria hyperborea (Malmgren) Gattyana cirrosa (Pallas) (36) (186) Gattyana amondseni (Malmgren) Sabellides borealis Sars (1) (1) Pista flexuosa (Grube) (15) Nephtys ciliata (MuUer) (2) Pista maculala (Dalyell) (1) Cirratulus cirratus (Muller) (1) Euchone papillosa (Sars) (4) 12. Hebron Fjord, 58°09' N., 62°45.7' W., 125 fms., mud, Aug. 8, 1949; -1.85° C. (-1.8 to -1.8), 33.1°/oo. 534 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 105 Gattyana cirrosa (Pallas) (16) Sabellides borealis Sars (9) Chaetozone setosa Malmgren (30) Pista flexuosa (Grube) (4) Nicomache lumbricalis (Fabricius) Pista maculata (Dalyell) ''20) (3) Potamilla neglecta (Sars) (1) Pectinaria hyperborea (Malmgren) Euchone papillosa (Sars) (10) (62) 13. Hebron Fjord, 58°08.6' N., 62°55.6' W., 90 fms., mud, Aug. 11, 1949; -1.8° C. (-1.8 to -1.7), 33.12°/oo. Pectinaria hyperborea (Malmgren) (5) 14. Hebron Fjord, 58°05.6' N., 63°03.9' W., 50 fms., mud, some rock, Aug. 12, 1949; —1.7° C. (-1.8 to -1.6), 32.55°/oo. Harmothoe extenuata (Grube) Nicomache lumbricalis (Fabricius) (2) (1) Arcteobia anticostiensis (Mcln- Pectinaria hyperborea (Malmgren) tosh) (1) (10) Gattyana cirrosa (PaUas) (2) Pista maculata (Dalyell) (1) 15. Strait of Belle Isle, Forteau Bay, 51°28' N., 56°54' W., 15-20 fms., sand, June 26, 1949; 2° C. (-1.0 to 6.0), 31.33°/oo. Travisia forbesii Johnston (2) Ophelia limacina (Rathke) (2) 16. St. Lewis Inlet, Indian Island, Assizes Run, 52°15' N., 55°04' W., 8 fms., sand and rock, July 11, 1949; 4° C. (—1.6 to 6.0), 29°/oo. Harmothoe extenuata (Grube) (4) Nereis pelagica Linn6 (1) 17. Strait of Belle Isle, Red Bay, 51°44' N., 56°25' W., 8 fms., soft mud, June 30, 1949; 2° C. (-1.6 to 6.0), 31%o. Nephtys ciliata (Miiller) (4) Ampharete acutifrons Grube (1) Pherusa plumosa (Miiller) (4) Lysippe labiala Malmgren (1) Praxillella praetermissa (Malm- Samytha sexcirrata (Sars) (3) gren) (2) TerebelUdes stroemii Sars (2) Pectinaria hyperborea (Malmgren) Chone duneri Malmgren (2) (4) 18. Hebron Fjord, Soak Point, 58°11' N., 63°01' W., 13 fms., rock, pebbles, sand, Aug. 31, 1949; 1.0° C. (-1.8 to 3.0), 31°/oo. Gattyana cirrosa (Pallas) (2) Lumbrineris fragilis (Miiller) (3) Nephtys ciliata (Miiller) (4) Pherusa plumosa (Miiller) (1) 19. Kaipokok Fjord, 54°56' N., 59°38' W., 45 fms., silt, Aug. 1, 1949; -1.8° C. (-1.8 to -1.6), 32.9°/oo. Melaenis lovSni Malmgren (1) 20. Davis Inlet, 55°51' N., 60°48' W., 12 fms., rubble, Aug. 3, 1949; 4.0° C. (-1.8 to 6.0), 30°/oo. Harmothoe extenuata (Grube) (1) Pectinaria granulata (Linn6) (2) Nephtys ciliata (Miiller) (2) Thelepus cincinnatus (Fabricius) Flabelligera affinis Sars (1) (3) POLYCHAETE WORMS—PETTIBONE 535 21. St. Lewis Inlet, Assizes Harbor, 52°15' N., 55°04' W., 6 fms., muddy sand and coral, July 15, 1949; 4.5° C. (—1.6 to 6.0), 2q°/«o Harmothoe extenuata (Grube) (1) 22. Strait of Belle Isle, 2 miles off Anse au Loup, 51°36' N., 56°38' W., 30-40 fms., June 29, 1949; -0.5° C. (-1.2 to 2.0), 32%o. Harmothoe extenuaia (Grube) (1) Eusyllis blomstrandi Malmgven (2) Autolytus alexandri Malmgren (1) Nei-eis pelagica Linne (3) 23. Hamilton Inlet, Cartwight Harbor, 53°43' N., 57°02' W., 6 fms., sand, mud, rock, much detritus, July 19, 1949; 9° C. (—1.6 to 10), 26°/oo. Harmothoe imbricaia (Linne) (1) Melinna cristata (Sars) (1) Lumhrineris fragilis (Miiller) (2) Tcrehellides stroemii Sars (1) Praxillella praeiermissa (Malm- Sabella crassicornis Sars (1) gren) (3) 24. Hamilton Inlet, Indian Harbor, 54°27' N., 57°11' W., 6 fms., mudd}^ sandy, July 25, 1949; 6° C. (-1.8 to 8), 3l7oo.
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